<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>浮动布局示例</title>
    <style>
		.block{
			display: flex;
			flex-direction: column;
			background-color: white;
			justify-content: center;
			align-items: center;
			
		}
        .column {
			display: flex;
			gap: 5px; 
			justify-content: ;
        }
        .main-block {
            width: 200px;
            height: 200px;
            border: 1px solid #ccc;
			background-color: bisque;
            text-align: center;
            line-height: 100px;
            margin-bottom: 25px;
            font-size: 24px;
        }
        .xia-block {
            display: flex;
			margin-left: 0px;
			overflow: auto;
			gap: 5px; 
        }
		.one-block-1{
			margin-top: 10px;
			width: 300px;
			height: 50px;
			background-color: azure;
			border: 1px solid #ccc;
			text-align: center;
			line-height: 50px;
			font-size: 18px;
		}
		.one-block-2{
			margin-top: 10px;
			width: 100px;
			height: 100px;
			background-color: azure;
			border: 1px solid #ccc;
			text-align: center;
			line-height: 50px;
			font-size: 18px;
		}
		.left-block{
			float: left;
			background-color: bisque;
			float: left;
		}
		.right-block{
			float: right;
			gap: 5px;
			background-color: bisque;
			display: flex;
		}
    </style>
</head>
<body>
	<div class="block">
		<div class="column">
			   <div class="main-block">1</div>
			   <div class="main-block">2</div>
			   <div class="main-block">3</div>
		</div>
		<div class="xia-block">
			<div class="left-block">
				<div class="one-block-1">1-1</div>
				<div class="one-block-1">1-2</div>
			</div>
			<div class="right-block">
				<div class="one-block-2">3-1</div>
				<div class="one-block-2">3-2</div>
				<div class="one-block-2">3-3</div>
			</div>
		</div>
	</div>
</body>
</html>